timberlake050712_05_X17crop230.jpgJustin Timberlake and his bride-to-be Jessica Biel partied with about 50 guests at a pre-wedding bash in Puglia, Italy.

Timberlake, 31, and Biel, 30, are expected to tie the knot this weekend.

Last night's party took place at Cala Masciola beach on the Adriatic Sea. Following dinner and cocktails, family and friends including SNL's Andy Samberg, enjoyed a 10-minute firework show.

The exact wedding venue in Italy has yet to be revealed.

The A-list couple is tying the knot after nearly five years of dating.

The "SexyBack" singer proposed to his lady love over the Christmas holiday in Jackson Hole, Wyo.

This will be the first marriage for both.